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Related Concept Videos

Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Antigen Processing Pathways01:31

Antigen Processing Pathways

MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
MHC Class I: Presenting Endogenous...
Tissue Transplantation01:24

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Related Experiment Video

Updated: Jun 23, 2026

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry
08:07

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry

Published on: May 19, 2020

Multiple sclerosis and the major histocompatibility complex.

Sreeram V Ramagopalan1, Julian C Knight, George C Ebers

  • 1Wellcome Trust Centre for Human Genetics, UK.

Current Opinion in Neurology
|April 24, 2009
PubMed
Summary
This summary is machine-generated.

Genetics of multiple sclerosis (MS) reveal complex roles for the major histocompatibility complex (MHC). MHC class II genes significantly influence MS risk, interacting with environmental factors like vitamin D.

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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
11:22

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

Published on: October 15, 2019

Related Experiment Videos

Last Updated: Jun 23, 2026

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry
08:07

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry

Published on: May 19, 2020

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
11:22

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

Published on: October 15, 2019

Area of Science:

  • Neuroimmunology
  • Human Genetics

Background:

  • Multiple sclerosis (MS) is a prevalent neurological disorder in young adults.
  • Genetic factors play a significant role in MS etiology, with the major histocompatibility complex (MHC) being a key region of interest.

Purpose of the Study:

  • To review recent findings in MS genetics, focusing on the major histocompatibility complex (MHC).
  • To explore the intricate genetic associations within the MHC region and their impact on MS.

Main Methods:

  • Review of recent epidemiological and genetic studies on multiple sclerosis.
  • Analysis of major histocompatibility complex (MHC) gene associations, including haplotypes and alleles.
  • Investigation of epigenetic mechanisms and gene expression modulators.

Main Results:

  • MHC associations in MS are complex, involving haplotypes and potentially epigenetic factors.
  • MHC class II haplotypes demonstrate a hierarchy of risks, protective effects, and epistatic interactions.
  • Genes in the MHC region influence disease severity, exhibit parent-of-origin effects, and interact with vitamin D.

Conclusions:

  • The association between MHC class II and MS is more intricate than previously understood.
  • Understanding epistatic interactions and epigenetic features within the MHC is crucial for elucidating MS pathogenesis.
  • Further research into MHC genetics may facilitate the development of novel therapeutics for MS.